Pressure issue, older mobile home

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Rob36

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I'm new here so I'm sorry if there is a thread on what I'm experiencing. I've replaced my pressure tank (20gal as the old was that size), new pressure switch (40/60), new check valve on the pressure tank tee, well pump was tested with an ampmeter and told by a plumber its reading was fine I believe it was around 5.5A.
My water pressure has cut back some over the past few months, last week my pressure seemed to have raised by itself (even heard the water flowing in the pipes as a faucet was on). Within a few days the pressure cut back to what it has been. My question is what could be causing this noticeable drop in pressure, could there be something in the line(s) coming from the HW heater or air in the lines....the aerators are clean/practically new in the faucets might I add. The outside spigot has a pressure drop as well and my shower 3 handle rough in valve (as I saw its called online) needs replaced due to bad seals/deposits in it; it also hasn't been in use for a few months until water pressure is back to normal being that water barely comes out of its faucet when turned on. I appreciate any help to resolve my issue and Thanks in advance
 

Reach4

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You have a pressure gauge at the pressure tank. Get a garden hose thread pressure gauge to diagnose pressure drops. That gauge can go to a hose spigot, laundry tap, or the drain on the water heater.

So see if the pressure rise/drop rise vs history is at the pressure tank or only downstream.

Pressure drops often happen in water filters, but you would not expect that drop to suddenly reduce without you changing the cartridge.

pressure-gauge-hosebib.jpg


With hose threads
 
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Rob36

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You have a pressure gauge at the pressure tank. Get a garden hose thread pressure gauge to diagnose pressure drops. That gauge can go to a hose spigot, laundry tap, or the drain on the water heater.

So see if the pressure rise/drop rise vs history is at the pressure tank or only downstream.

Pressure drops often happen in water filters, but you would not expect that drop to suddenly reduce without you changing the cartridge.
I'll have to look up those garden hose thread pressure gauges and try it out when I have spare time to check everything, thank you Reach4
 

Reach4

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Garden shop, hardware store, Lowes, Home Depot, farm store... Pretty common item.
 

Reach4

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https://www.homedepot.com/p/Winters...Pointer-and-0-160-psi-kPa-PETM213LF/305046977
https://www.homedepot.com/p/JONES-S...ale-Brass-Hose-Connection-J66302/313479364(if in stock, I think I would try one of the last 2 (o...160 psi), but I think they are less likely to be in stock).

A 0...100 psi gauge would be a little better. https://www.acehardware.com/departments/plumbing/pumps-and-pump-parts/pressure-gauges/4509477
However that second "lazy" or "tattletale" hand, that some of the others have, can be useful for noting the peak pressure. However vibration can move that hand.
 
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Rob36

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https://www.homedepot.com/p/Winters...Pointer-and-0-160-psi-kPa-PETM213LF/305046977
https://www.homedepot.com/p/JONES-S...ale-Brass-Hose-Connection-J66302/313479364(if in stock, I think I would try one of the last 2 (o...160 psi), but I think they are less likely to be in stock).

A 0...100 psi gauge would be a little better. https://www.acehardware.com/departments/plumbing/pumps-and-pump-parts/pressure-gauges/4509477
However that second "lazy" or "tattletale" hand, that some of the others have, can be useful for noting the peak pressure. However vibration can move that hand.
My HD has the Watts gauge in stock, so the red hand will show me its peak pressure and the black will show the current pressure (if different)
 
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